Icom IC-7300 - Page 6

Its Mostly About The Receiver
Basic Receiver Elements (Direct Sampling ex. IC-7300)
6
• Most filtering, all noise reduction and signal detection
steps are performed digitally
• AGC System must maximize A/D converter resolution for
the desired signal
• Many possible sources of non-linearity are eliminated
• A/D Converter Resolution and Oscillator Phase Noise become the
main performance limiters
• Digital processing speed and algorithm performance also matter
A/D
Digital
Proc.
(FPGA)
RF (Pre-)
Amplifier
Bandpass
Filter
D/A
Digital
Osc.
AGC Loop, IP+